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(No Model.) 2 SheetsShaet 2.

S. FEUST.

V BUFPING AND POLISHING MACHINE. No. 272,871. Patented Feb.27, 1883.

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UNITED STATES PATENT OFFIQAE.

SIGMUND FEUST, OF NEW YORK, N. Y.

,BUFFING AND POLISHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 272,871, dated February2'7, 1883. Application filed January 22, 1883. (N model.)

To all whom it may concern:

Be it known that I, SIGMUND FEUST, of the city, county, and State of NewYork, have invented certain new and useful Improvements in Bufling andPolishing Machines, of which the following is a specification.

My improvements are directed to machines designed more particularly forbuffing and polishing metal, and they have special reference to theoperations of polishing and coloring brass, the coloring operation, socalled, be" ing designed to give the concluding or finishing polish tothe brass.

In buffing and polishing it is of material benefit to perform thecoloring polishing operation while the brass or other work is still hotfrom thepreliminary polishing operation, since under these conditionsthe coloring polish is obtained more quickly and with better effect. Tothis end I combine with the work-supporting table, which has a combinedlengthwise and laterally -1'eciprocatlng movement, two buffing-rolls theone a polishing-roll and the other a coloring-roll, which is placed inrear of the-first-m'entioned roll relatively to the direction oflengthwise movement of the tableso that the work as it leaves thepolishing-roll, and while it is still hot from the effect of thispreliminary polishing operation, shall be subjeczed to the action of thecoloring polishingroll, which thus gives it the coloring polish undermost favorable conditions. Inasmuch, however, as some'work requires,before receiving the coloring polish, more preliminary polishing thancan be obtained by passing only once under the polishing-roll, I mountthe coloring-roll so that it can be moved away from or toward the tableas desired, so as to throw that roll out of action until the work hasbeen preliminarily polished to the required extent, after which thecoloring-roll can be brought into'action' and the polishing-roll can inturn be thrown out of action while the coloring polish is being impartedto the work. In this way I am enabled with one machine to perform twooperations which heretofore have required two distinct apparatuses ormachines, and I so organize the parts that these successive operationsare performed more efgectively and with better results than hereto- Ore.

In the accompanying drawings, Figure 1 is a side elevation of so much ofa machine embodying my improvements as needed for the purpose ofexplaining my invention. Fig. 2 is a plan of the same with theroll-covering hood partly removed. Fig. 3 is a sectional end elevationof the machine with the hood removed. Fig. 4 is a longitudinal centralsection of the same, with the two rolls represented by dotted lines.Fig. 5'is a plan of the machine with the work-supporting table removed.Fig. 6 is a view of the under face of the table.

A is the frame of the machine, provided with longitudinal ways a, onwhich'slides the longidinally-movable frame B. This frameobtains itsmovement from a shaft, 0, which may be rotated either by hand or bypower, but represented in the present instance as provided with ahand-wheel, C, so that it may be rotated by the workman. A pivoted pawl,b, on the machine-frame normally engages a ratchet, 0, on the shaft 0,and is connected to a treadle, d, by depressing which the pawl can bedisengaged from the ratchet. The object of this pawl-and-rat-chetarrangement is to prevent the table-carrying frame B from being forcedback by the power of the buffing-wheels in a direction opposite to thatin which it is moved by band, should the workman wish to leave themachine while the work is in progress.

Shaft O is provided with two spur-wheels, c, which engage racks fon theunder side of the frame B, and thus act to move the latter in onedirection or the other, according to the direction of rotation of theshaft.

Upon the longitudinally-movable frame is mounted a bed, D, whichreceives a movement of continuous lateral reciprocation during thelongitudinal movement of frame B, by which it is carried. For thispurpose the bed has in its four corners, on its under side, sockets g,which are entered by wrist-pins h on the ends of crank-arms t, swiyeledatj in the frame B.

Extending lengthwise and centrally of the under side of bed D is agroove, 70, which is entered by a friction-roller mounted on'a pin, 1,set eccentrically in a disk or hub, m, fixed on the upper end of avertical shaft, a, which is supported in a proper bearing, 0, on themachine-frame, and is provided at its lower end with a beveled gear, 1,that meshes with a like ICO gear, 2, on a power-driven rotating shaft,3, obtaining its motion in any suitable way-in this instance by means ofa pulley, 4, driven by belting from any convenient source of power. Thepin Zis carried by a slide, 1, held in a dovetailed diametrical grooveon the face of hub m, so that it may be adjusted nearer to or fartherfrom the axis, according to the lateral throw desired to be given to thetable. It is held in its adjusted [)OsitiOU by a set-screw, 6 By meansof the foregoing instrumentalities the table during lengthwise travel isswung from side to side with sufticient rapidity to prevent the workwhich is under the action of the buffing-rolls from becoming streaky.

Above the table are the two rolls E Fthe former the polishing-roll andthe latter the coloring polishing-roll, set parallel with and in rear ofthe polishing-roll relatively to the direction of movement of the workto be simultaneously acted on by said rolls. These rolls are preferablymade as indicated in my former patent, No. 270,294, January 9,1883; butthey can be constructed in other ways. Above them are theprotecting-hood G and the hoppers H I, through which the proper buffingcompositions are slowly supplied to the re spective rolls.

The shaft Jof each roll is mounted in stand.- ards K, which areadjustable up and down in guides L on the machine-frame, and are held indesired position by set-screws 19. Each pair ofstandards is adjusted byadj usting-screws 1", held in suitable bearings, so as to be capable ofrotary movement only, and having fixed on their lower ends beveled gears5, which mesh with like gears, 6, on a cross-shaft, 7, provided with ahand-wheel, S, by turning which the butting-roll in operative connectiontherewith may be raised or lowered, as desired. Thus either roll can bethrown out of action, or they can both be broughtinto action simnltaneonsly, according to the character of the work. TheguidesLareinclined,asshown,occupying such aposition that thebutting-rolls, as they wear away, can be lowered without slackeningtheir driving-belts.

The mode ofoperation of the machine is sufficiently disclosed in theforegoing description, and does not require explanation further than toadd that in the case of operating on brass,

for instance, the first roll, E, is supplied with I a comparativelygreasy compound, usually known as rouge composition. The surface of thebrass plate, by the action of this device, is polished, or, in otherwords, is put in condition for the action of the coloringroll F. Itpasses out from under roll E smoothed and hot, but havingacomparativelydull appearing surface. The second roll, F, which must be kept free fromoil, is supplied with a compound of much finer materials than the first,and known as nickel rouge. The action of this roll upon the heated brassplate is to effect a certain rich change in the surface color and toimpart to the work a brilliant luster.

Having described my improvements, what I claim, and desire to secure byLetters Patent, 1s-

1. The combination, with the1ongitudinallymovable andlaterally-reciprocating work carrying table,ot' the polishing-roll andthe coloring polishing-roll, placed in rear of the firstnained roll, soas to operate on the brass or other work after the latter has passed thepolishing-roll, substantially as and for the purposes herein before setforth.

2. The combination of the longitudinallymovable andlaterally-reciprocating work-carrying table and the polishing andcoloring polishing rolls, each mounted independently of the other inbearings movable toward and away from the face of the table, so thateither or both of said rolls may be thrown into or out of action,substantially as and for the purposes hereinbefore set forth.

3. The longitudinally-movable table-supporting frame and the tablemounted on oscillating crank-arms swiveled to said frame, in combinationwith the power-driven rotating shaft provided with an adjustablecrank-pin or roller, extending into a longitudinal groove on the underside of the table, whereby the latter, during the lengthwise movement ofsupportingfra-me, has imparted to it a continuous movement of lateralreciprocation, as shown and described.

In testimony whereof I havehereunto set my hand this 21st day ofNovember, 1882.

SIGMUND FEUST.

Witnesses:

FREDERICK Vot'r, 0H. BEoKER.

